Identify the element that contains the following number of protons and neutrons: 9 protons and 9 neutrons. A)F B)N C)O D)C Solution: Atom...

How many grams of sulfur (S) will be required to react with 5 g of sodium (Na) to produce Na2S? A) 3.5 B) 7.0 C) 1.7 D) 6.4 Solution:...

Which of the following pairs of elements would be most likely to share similar properties? A) N and O B) B and Si C) Na and Mg D) Br and...

Write the formula for the ionic compound formed from magnesium and sulfur. A) MgS B) MgS2 C) Mg2S D) MgS3 E) Mg3S2 Solution: Writing...

Which of the following liquids, at the same temperature, has the lowest vapor pressure? A) CH3-O-CH3 B) CH3-CH2-CH2-CH3 C) CH3-CH2-CH3 D)...

How many σ-bonds and π-bonds are in a CO2 molecule? A) 4 σ-bonds and 0 π-bonds B) 2 σ-bonds and 2 π-bonds C) 2 σ-bonds and 4 π-bonds D) 1...

Two different values, less than 180°, are observed for the bond angles in which of the following basic structures for molecules and ions?...

A gas sample containing 0.3525 moles of a compound is trapped in a 2.641 liter vessel at a temperature of 28.4 °C. What is the pressure...

The equation we need that involves heat and change in temperature is q=mcΔT where q is heat in Joules, m is mass in grams, c is specific...

Rate Law is an equation that shows how the rate of the reaction is affected by the concentration of reactants Overall order of the...